🔍 HFS Pressure Gauge Test, Measure & Inspect - Vacuum-Filled Review

Appears to be a well made sensor. I can't speak for accuracy as I don't have a proper standard to rely on, but it seems reasonable. The only reason the 4 stars are easy to read is because I feel like a little more liquid could be added to the gauge which would reduce the size of the air bubble at the top and make the most important segment easier to read. Some bubbles must be allowed to allow for thermal expansion. Otherwise, this is a good indicator, especially for the money.

I ordered two and firstly they look different than the picture. (Actually, mine looks better, looks more metallic and durable, but it's just unprofessional for the seller to portray inaccurate descriptions). Second, and this is a more serious issue, the gauges are already reading vacuum as they sit on my desk in atmospheric conditions, separate from any plumbing (they currently read -6 inches of mercury and -4 inches of mercury). . I didn't expect "atomic clocks" to be accurate, but that's too…

Purchased for use on the inlet of the pool pump along with a pressure gauge on the outlet to measure the total pressure in my filter. It worked when I first installed it 2 months ago and the reading compared to the pump charts compared favorably to my flow meter but now the needle is stuck at zero which is clearly wrong. I don't know exactly when it failed, but it may have been just a few days or weeks after installation since the last time I looked at it was when it was first installed. In…